Methods and apparatus for effecting quick mandrel changes in con

Details Methods and apparatus for effecting quick mandrel changes in con Methods and apparatus for effecting quick mandrel changes in con

1980-01-15

1982-01-05

Hampilos, Gus T.

Metal founding

Process

Shaping liquid metal against a forming surface

164137, 164421, 164340, 164341, B22D 1100

Patent

active

043089089

ABSTRACT:
In continuous casting of tubular products, the same die is used with mandrels of different sizes depending on the internal diameter of the tubular product to be cast. This avoids the necessity of dismanteling the casting "set-up" in order to remove a die and mandrel assembly when changing from casting a tubular product of one internal diameter to another of the same external diameter but different internal diameter. The mandrel and die are constructed so that the mandrel is releasable from the die after use to enable another mandrel to be inserted in the same die. During casting, the mandrel is maintained within the die against axial movement either by a thermocouple device positioned within the associated crucible to engage the top of the mandrel. The mandrel may be removed either manually or by a suitable tool engageable with the mandrel.

REFERENCES:
patent: 3486550 (1969-12-01), Yearley
patent: 3578065 (1971-05-01), Langer
patent: 3698470 (1972-10-01), Fink
patent: 4154291 (1979-05-01), Nielsen

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